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Grizzlyman
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# Posted: 11 Sep 2023 09:06am - Edited by: Grizzlyman
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Thought I’d share this. Kind of funny.
When I put my water system in, I made a mistake with the tubing. I THOUGHT I had read the acceptable PSI limit of 1/2 vinyl tubing… but now when I go back and look - everything I can find says 45 psi working, 55 max…Whoops!
My system is 55 PSI.
I came back to the cabin this weekend and the water lines looked like stuffed sausages. Lol.
It’s all external anyways so no big deal. - this was more of a temporary “proof of concept†anyways. I had planned to redo the lines next year- and all I’m out is a $20 roll of tubing.
Do you think it’ll burst? Or do you think itlll be good till winter at least when i drain it in a few weeks?
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gcrank1
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# Posted: 11 Sep 2023 09:23am
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Like so make ratings there may be a safety factor in their stated 45psi for actual burst? Then again it could be 'made in some lyin country' that puts whatever they want to on it......
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Atlincabin
Member
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# Posted: 11 Sep 2023 11:39am
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Perhaps obvious, but make sure you turn off the pump when away, otherwise if it bursts your pump will run continuously and pump water to nowhere.....
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rpe
Member
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# Posted: 11 Sep 2023 11:49am
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Wow, that doesn't look good! With all that line expansion, you could almost do away with the tank!
We've got a similar setup, with jet pump and 5 gallon pressure tank under the cabin. It's all plumbed with poly pipe and hose clamps. Poly pipe at the local building store is either 75psi or 100 psi rated, so either should work for your application.
If you are hoping to get it to last until end of season, why not crank down the pressure so you still have running water, but stay a bit below the pressure rating of the hose? Here's a link to show the method of adjustment.
As for Atlincabin's comment - that's been my concern as well, so we usually turn the breaker off to the pump when leaving. That said, I've been setting up a new water system with submersible pump, and have found out the modern version of those 'Pumptrol' switches have an auto-shutoff if pressure drops down near zero. I guess the hope is it will shut off to prevent pumping the entire lake into your cabin while you're gone. When using those new-style switches, they have a lever on the side that allows manual closing of the contacts to run the pump until pressure builds to within the normal operating range. After that the 'auto' mode is set to run between the the 20-40, 30-50 or 40-60 psi set points of the switch.
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Grizzlyman
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# Posted: 11 Sep 2023 12:28pm
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Atlincabin
Not a worry. It’s solar powered and disconnected when we’re gone.
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Grizzlyman
Member
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# Posted: 11 Sep 2023 01:04pm
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rpe
not a big deal. Proabably need to drain everything in a week or two in N minnesota as freezing temps sneak up quickly. I think I’ll swap it out next year anyways.
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Brettny
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# Posted: 11 Sep 2023 02:50pm
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Soft tubing like that may work if you use the reinforced stuff. How ever it does get prety hard after a few years.
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shingobeek
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# Posted: 13 Sep 2023 07:30pm
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GRizz...where are you in N MN? I am in Isabella.
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Grizzlyman
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# Posted: 14 Sep 2023 02:57pm
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shingobeek
We are by Ely- so not too far!
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NorthRick
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# Posted: 15 Sep 2023 06:10pm - Edited by: NorthRick
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Quoting: Grizzlyman Do you think it’ll burst? Or do you think itlll be good till winter at least when i drain it in a few weeks?
Don't know why, but Clint Eastwood's line, "you have to ask yourself one question: do I feel lucky?" popped into my head. 
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Grizzlyman
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# Posted: 23 Sep 2023 06:27pm - Edited by: Grizzlyman
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In the end…It did not burst… just grew to 3/4†tubing.
I was up today and winterized it. I just cut all the tubing at the connection points for the winter( I will replace next year) I drained the rv pump, drained the pressure tank, drained the main pump lines, pulled the foot valve of the main lines, and pulled them out of the lake.
The lake water is still in the upper 50s… but freezing temps are just around the corner I’m sure.
We’ll still get another month out of the cabin, but will haul water until winter.
I might run new lines yet this year, even if I don’t actually hook them up to water yet. I mean, being under the cabin when Allthe bugs are dead is a lot more fun than in the spring. Lol
I think I might just run copper lines under the cabin instead of tubing or pex. Not that much more difficult and sweating joints is super easy. Thought about galvanized steel but copper is just easier.
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